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S3C9442 Datasheet(PDF) 12 Page - Samsung semiconductor |
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S3C9442 Datasheet(HTML) 12 Page - Samsung semiconductor |
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12 / 50 page  SAM88RCRI INSTRUCTION SET S3C9442/C9444/F9444/C9452/C9454/F9454 6-12 ADD — Add ADD dst,src Operation: dst ← dst + src The source operand is added to the destination operand and the sum is stored in the destination. The contents of the source are unaffected. Two's-complement addition is performed. Flags: C: Set if there is a carry from the most significant bit of the result; cleared otherwise. Z: Set if the result is "0"; cleared otherwise. S: Set if the result is negative; cleared otherwise. V: Set if arithmetic overflow occurred, that is, if both operands are of the same sign and the result is of the opposite sign; cleared otherwise. Format: Bytes Cycles Opcode (Hex) Addr Mode dst src opc dst | src 2 4 02 r r 6 03 r lr opc src dst 3 6 04 R R 6 05 R IR opc dst src 3 6 06 R IM Examples: Given: R1 = 12H, R2 = 03H, register 01H = 21H, register 02H = 03H, register 03H = 0AH: ADD R1,R2 → R1 = 15H, R2 = 03H ADD R1,@R2 → R1 = 1CH, R2 = 03H ADD 01H,02H → Register 01H = 24H, register 02H = 03H ADD 01H,@02H → Register 01H = 2BH, register 02H = 03H ADD 01H,#25H → Register 01H = 46H In the first example, destination working register R1 contains 12H and the source working register R2 contains 03H. The statement "ADD R1,R2" adds 03H to 12H, leaving the value 15H in register R1. |
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